11. The zero coupon bond is also recommended. 12. The central bank began selling the notes in January 1995, after discontinuing zero coupon bonds a month earlier. 13. Zero coupon bonds were first introduced in the 1960s, but they did not become popular until the 1980s.14. Yesterday, Bayerische Landesbank sold 1 billion French francs ( $ 192 million ) of 15-year zero coupon bonds . 15. Since then, zero coupon bonds have been sold in deutsche marks, dollars, Luxembourg francs, Danish kroner and French francs. 16. The interest rates implied by the zero coupon bonds form a yield curve or more precisely, a zero curve. 17. Zero coupon bonds are bought at a deep discount from their face value and don't make periodic interest payments.18. Note that any of the bonds could be zero coupon bonds , meaning they do not pay any coupon interest. 19. Zero coupon bonds make no periodic interest payments, but instead are sold at a deep discount from their face value.20. When interest rates rise, the market value of zero coupon bonds fall more than regular bonds that pay interest periodically.